package com.firefly.codec.http2.frame;

import java.nio.charset.StandardCharsets;

public class PrefaceFrame extends Frame {
    /**
     * The bytes of the HTTP/2 preface that form a legal HTTP/1.1 request, used
     * in the direct upgrade.
     */
    public static final byte[] PREFACE_PREAMBLE_BYTES = ("PRI * HTTP/2.0\r\n" + "\r\n")
            .getBytes(StandardCharsets.US_ASCII);

    /**
     * The HTTP/2 preface bytes.
     */
    public static final byte[] PREFACE_BYTES = ("PRI * HTTP/2.0\r\n" + "\r\n" + "SM\r\n" + "\r\n")
            .getBytes(StandardCharsets.US_ASCII);

    public PrefaceFrame() {
        super(FrameType.PREFACE);
    }
}
